berkelium [bʉrk′lē əm ]
[ModL, after BERKELEY2, Calif. + -IUM: so named by Glenn T. Seaborg, U.S. chemist and one of its discoverers, by analogy with TERBIUM]
a radioactive, metallic chemical element, one of the actinides, initially produced by bombarding americium with high-energy alpha particles in a cyclotron, and now prepared by intense neutron bombardment of plutonium: symbol, Bk; at. no., 97: see the periodic table of elements in the Reference Supplement

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  • BERKÉLIUM — Le berkélium (symbole Bk) est un élément chimique synthétique découvert en 1949. Son numéro atomique 97 le situe dans la classification périodique parmi les éléments dits « transuraniens » dont il est le cinquième membre, suivant immédiat du… …   Encyclopédie Universelle

  • Berkelium — Berkélium Berkélium Curium …   Wikipédia en Français

  • Berkélium — Curium ← Berkélium → Californium Tb …   Wikipédia en Français

  • berkelium — er*ke li*um (b[ e]r*k[=e] l[ e]*[u^]m), n. [from the city of Berkeley, California, location of the University of California campus where it was discovered.] a chemical element of the transuranic series. Chemical symbol Bk; atomic number 97;… …   The Collaborative International Dictionary of English

  • berkelium — BERKÉLIUM s.n. v. berkeliu. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • berkelium — Symbol: Bk Atomic number: 97 Atomic weight: (247) Radioactive metallic transuranic element. Belongs to actinoid series. Eight known isotopes, the most common Bk 247, has a half life of 1.4*10^3 years. First produced by Glenn T. Seaborg and… …   Elements of periodic system

  • Berkelium — Eigenschaften …   Deutsch Wikipedia

  • Berkelium — Bk redirects here. For other uses of the abbreviation, see BK (disambiguation). Berkelium (pronEng|bɚˈkiːliəm or IPA|/ˈbɝkliəm/ Fact|date=March 2008) is a synthetic element with the symbol Bk and atomic number 97. A radioactive metallic element… …   Wikipedia

  • berkelium — /beuhr kee lee euhm/, n. Chem. a transuranic element. Symbol: Bk; at. no.: 97; at. wt.: 249 (?). [1945 50; named after BERKELEY, California, where it was discovered; see IUM] * * * ▪ chemical element  (Bk),    synthetic chemical element of the… …   Universalium

  • Berkelium — Ber|ke|li|um 〈n.; s; unz.; Chem.; 〉 künstl. hergestelltes radioaktives chem. Element, Ordnungszahl 97 [nach der Stadt Berkeley in Kalifornien] * * * Ber|ke|li|um [nach dem Ort der erstmaligen Herst. Berkeley (California, USA); ↑ ium (1)], das; s; …   Universal-Lexikon

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